Battle damaged costume sets were brought up during one of the streams.
It was pretty much handled the way you specified (minus the aura of course). Specific costume pieces would be something possible. To expand to every piece of costume in the game would be too time consuming.
"I saw my advantage and took it. That's what heroes do." - Homer Simpson.
K, so picture this:
As either a costume set or an aura (not sure which would work better, so I figured creating a separate thread since I didn't know which art topic to post it in)...
Various costume options could be made that feature either the character wearing armor or tights, but with visible battle wounds (of the heroic type), like javelins sticking out of the chest, perhaps a sword sticking out of you (which might have the hilt broken off), maybe even signature character weapons like claws stickin in ya.
And of course...
...an arrow in the knee.
Only question really is, would it work better as an aura, or as actual costume parts? If it were an aura, it could be used with any existing costume parts (but not with another aura), and if it were costume parts, you'd be stuck with whichever clothing the artists felt would be added to it. Perhaps it would be a variant of the "blast" look. Though I'm thinking it'd be cooler as a variant of some "knight in shining armor" type armor.
you could have it all
My empire of dirt
I will let you down
I will make you <3